The present invention relates to a composition for dyeing keratinous fibres, in particular human keratinous fibres such as hair, comprising, in an appropriate dyeing medium, at least a mixture of at least 2 cationic direct dyes of a given formula, compositions thereof, to processes for their preparation and to their use in the dyeing of organic material, such as keratin fibers , wool, leather, silk, cellulose or polyamides, especially keratin-containing fibres, cotton or nylon, and preferably hair, more preferably human hair.

It is known, for example, from WO 95/01772, WO 95/15144, EP 714 954 and EP 318 294 that cationic dyes can be used to dye organic material, for example keratin, silk, cellulose or cellulose derivatives, and also synthetic fibres, for example polyamides. Cationic dyes exhibit very brilliant shades. A disadvantage is their unsatisfactory fastness to hydrolysis and to light, their frequently inadequate stability under reducing or oxidizing conditions, and their frequently unsatisfactory storage stability (see: John F. Corbett: "The Chemistry of Hair-Care Products", JSCD August 1976, page 290).

The actual technical problem of the present invention was to provide brilliant dyes that are distinguished by deep dyeing having good fastness properties with respect to washing, light, shampooing and rubbing, and that preferably exhibit satisfactory stability under reducing or oxidizing dyeing conditions, for the dyeing of organic material.

Accordingly, the present invention relates to a hair dye composition, comprising (a) a dye of formula

(b) at least one dye selected from the compounds of formulae D-N

(2) An- : (3) D-N-K

N- -K I An and H

(4) ; wherein

D is the radical of a diazo component of the formula (2a)

K is the radical of a coupling component selected from aniline derivatives; phenol derivatives; naphthalene derivative;

X is -CH= -O-; -S-; or -N(R ₇ )-; Ri, R ₂ , R3 and R ₄ independently from each other are hydrogen; or d-C ₄ alkyl; R ₅ and R ₆ independently from each other are hydrogen; Ci-C ₄ alkyl; or Ci-C ₄ alkoxy; R ₇ and R ₉ independently from each other are unsubstituted or OH-, Ci-C ₄ alkoxy-, halogen-, amino-, C-ι-C ₄ -mono or -dialkylamino-substituted CrC ₄ alkyl; or phenyl; R ₈ is hydrogen; Ci-C ₄ alkyl; Cl; or nitro;

R ₁ 0 is hydrogen; Ci-C ₄ alkyl; Cl; nitro; amino; or Ci-C ₄ mono- or Ci-C ₄ dialkylamino; R ₁₁ is hydrogen; Ci-C ₄ alkyl; or CN; R ₁₂ is unsubstituted or OH- or CN-substituted CrC ₄ alkyl; Ri ₃ is hydrogen; or Ci-C ₄ alkyl;

Ri ₄ and Ri ₅ independently from each other are hydrogen; Ci-C ₄ alkyl; or Ci-C ₄ alkoxy; or Ri ₄ and Ri ₅ together with the nitrogen and carbon atoms joining them together form a 5- or 6- membered ring; Ri ₆ and R ₂ o independently from each other are hydrogen; Ci-C ₄ alkyl; hydroxy; Cl; nitro; amino, Ci-C ₄ mono- or dialkylamino; R ₁₇ , Ri8, Ri9, R21, R22 and R23 independently from each other are hydrogen; or d-C ₄ alkyl; R ₂₄ is hydrogen; or d-C ₄ alkyl; and An ^" is a colorless anion.

Ci-C ₃₀ alkyl is for example, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, 2-pentyl, 3-pentyl, 2,2'-dimethylpropyl, cyclopentyl, cyclohexyl, n-hexyl, n-octyl, 1 ,1 ',3,3'-tetramethylbutyl or 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl, tredecyl, tetradecyl, pentadecyl, haxadecyl or eicosyl.

C ₂ -C ₃₀ alkenyl is for example allyl, methallyl, isopropenyl, 2-butenyl, 3-butenyl, isobutenyl, n- penta-2,4-dienyl, 3-methyl-but-2-enyl, n-oct-2-enyl, n-dodec-2-enyl, iso-dodecenyl, n-dodec- 2-enyl or n-octadec-4-enyl.

Aryl is for example naphthyl and preferably phenyl.

Heterocyclic organic radical is, for example, a five-membered nitrogen-containing heterocyclic radical such as imidazolyl, pyrazolyl, triazolyl, pyrrolyl, pyrrolidinyl, oxazolyl or thiazolyl, a six-membered nitrogen-containing heterocyclic radical such as piperazinyl, piperidinyl, py- ridinyl or morpholinyl, or a bicyclic radical which possesses a fused-on five-membered nitro- gen-containing heterocycle and a six-membered aromatic ring, such as benzoxazolyl, indolyl, benzothiazolyl, benzimidazolyl or benzotriazolyl.

Preferred is a hair dye composition, wherein in formula (1 ) of component (a) R-i, R ₂ , R3 and R ₄ independently from each other are hydrogen; or Ci-C ₂ alkyl.

More preferred is a hair dye composition, wherein component (a) corresponds to formula

Preferably R ₈ is hydrogen; or d-C ₄ alkyl.

More preferably, in formulas (2a) and (2b) - A -

R ₇ and R ₉ independently from each other are Ci-C ₄ alkyl; and even more preferred are hair dye compositions, wherein in formula (2a) X is -NR ₇ ; and R ₈ is hydrogen; or d-C ₄ alkyl.

Preferred are hair dye compositions, wherein

D is a radical of formula (2e)

Even more preferred are hair dye compositions, wherein in formulas (2)

K is the radical of formula (2i) ; wherein

R ₂ 5 is hydrogen; hydroxy; Ci-C ₄ alkyl; Ci-C ₄ alkoxy; nitro; amino; mono-Ci-C ₄ alkylamino; di-

Ci-C ₄ alkylamino; or a radical of formula ; wherein

R ₂ 6, R ₂ 7 and R ₂ s independently from each other are hydrogen; or Ci-C ₄ alkyl.

Preferred are also hair dye compositions wherein K is the radical of formula (2k)

Most preferred are hair dye compositions comprising

(a) a dye of formula (1 ), and

(b) at least one dye selected from the compounds of formulae

Preferred are also hair dying compositions, comprising

(a) a dye of formula (1 ), and

(b) at least one dye selected from the compounds of formulae

Also preferred are hair dying compositions, comprising (a) a dye of formula (1 ), and (bi) the dyes of formulae

(b ₂ ) the dye of formula

The hair dye compositions according to the invention are suitable for dyeing organic materials, such as keratin-containing fibers, wool, leather, silk, cellulose or polyamides, cotton or nylon, and preferably human hair. The dyeings obtained are distinguished by their depth of shade and their good fastness properties to washing, such as, for example, fastness to light, shampooing and rubbing. The stability, in particular the storage stability of the hair dye compositions according to the invention are excellent.

The multiplicity of shades of the dyes can be increased by combination with other dyes.

Therefore the hair dye compositions of the present invention may be combined with dyes of the same or other classes of dyes, especially with direct dyes, oxidative dyes; disulfide dyes, pigments or mixtures thereof.

Direct dyes are of natural origin or may be prepared synthetically. They are uncharged, cationic or anionic, such as acid dyes.

The hair dye composition according to the present invention of may be used in combination with at least one single direct dye different from the dyes of component (a) and (b).

Examples of direct dyes are described in "Dermatology", edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 7, p. 248-250, and in "Europaisches Inventar der Kosmetikrohstoffe", 1996, published by The European Commission, obtainable in diskette form from the Bundesver- band der deutschen Industrie- und Handelsunternehmen fur Arzneimittel, Reformwaren und Korperpflegemittel e.V., Mannheim.

Furthermore, cationic nitroaniline and anthraquinone dyes are useful for a combination with the hair dyeing composition according to the present invention.

The hair dye composition according to the present invention may also be combined with acid dyes, for example the dyes which are known from the international names (Color index), or trade names.

These acid dyes may be used either as single component or in any combination thereof. The hair dye composition according to the present invention may also be combined with uncharged dyes, for example selected from the group of the nitroanilines, nitrophenylene- diamines, nitroaminophenols, anthraquinones, indophenols, phenazines, phenothiazines, bispyrazolons, bispyrazol aza derivatives and methines.

Furthermore, the hair dye composition according to the present invention may also be used in combination with sulfide dyes. Examples for sulfide dyes are disclosed for example in WO 05/097051.

Furthermore, the hair dye composition according to the present invention may also be used in combination with color pigments.

The organic pigments are preferably selected from D&C Red 30 (Vat Red 1 ); D&C Red 36 (Pigment Red 4); Carmine; D&C Red 6 Ba Lake; D&C Red 7 Ca Lake; D&C Red 30 Al Lake; D&C Red 30 Talc Lake; D&C Red 27 Al Lake; D&C Red 28 Al Lake; D&C Red 33 Al Lake; D&C Red 21 Al Lake.

Of specific interest are the pigments/colours listed in Table 1 below:

The interference pigments as used in the present invention are platelet particulates. The platelet particulates preferably have a thickness of no more than about 5 micrometers, more preferably no more than about 2 micrometers, still more preferably no more than about 1 micrometer. The platelet particulates preferably have a thickness of at least about 0.02 micrometers, more preferably at least about 0.05 micrometers, even more preferably at least about 0.1 micrometers, and still more preferably at least about 0.2 micrometers.

Furthermore, the hair dye composition according to the present invention may also be used in combination with oxidation dye systems.

Oxidation dyes, which, in the initial state, are not dyes but dye precursors are classified according to their chemical properties into developer and coupler compounds.

Suitable oxidation dyes are described for example in

DE 19 959 479, especially in col 2, I. 6 to col 3, 1. 1 1 ; "Dermatology", edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 8, on p. 264 - 267 (oxidation dyes).

Preferred developer compounds are for example primary aromatic amines, which are substituted in the para- or ortho- position with a substituted or unsubstituted hydroxy- or amino residue, or diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazol derivatives or 2,4,5,6-tetraaminopyrimidine derivatives.

Furthermore, developer compounds in their physiological compatible acid addition salt form, such as hydrochloride or sulfate can be used. Developer compounds, which have aromatic OH radicals are also suitable in their salt form together with a base, such as alkali metal- phenolates.

Preferred developer compounds are disclosed in DE 19959479, p. 2, I. 8 - 29.

Preferred coupler compounds are m-phenylenediamine derivatives, naphthole, resorcine and resorcine derivatives, pyrazolone and m-aminophenol derivatives, and most preferably the coupler compounds disclosed in DE 19959479, p.1 , 1. 33 to p. 3, 1. 1 1.

Furthermore, autooxidizable compounds may be used in combination with the hair dye composition according to the present invention.

Autooxidizable compounds are aromatic compounds with more than two substituents in the aromatic ring, which have a very low redox potential and will therefore be oxidized when exposed to the air. The dyeings obtained with these compounds are very stable and resistant to shampoo.

Autooxidizable compounds are for example benzene, indole, or indole, especially 5,6- dihydroxyindol or 5,6-dihydroxyindol.

The hair dye composition according to the present invention may also be used in combination with naturally occurring dyes, such as henna red, henna neutral, henna black, camomile blossom, sandalwood, black tea, Rhamnus frangula bark, sage, campeche wood, madder root, catechu, sedre and alkanet root.

Furthermore, the hair dye composition according to the present invention may also be used in combination with capped diazotized compounds.

Suitable diazotized compounds are for example the compounds of formulae (1 ) - (4) in WO 2004/019897 (bridging gages 1 and 2) and the corresponding water-soluble coupling components (I) -(IV) as disclosed in the same reference.

The present invention also relates to formulations, which are used for the dyeing of organic materials, preferably keratin-containing fibers, and most preferably human hair, comprising the hair dye composition according to the present invention.

The appropriate dyeing medium (or carrier) generally consists of water or of a mixture of water and of at least one organic solvent for solubilizing the compounds which would not be sufficiently soluble in water. As organic solvent, there may be mentioned for example the CrC ₄ lower alkanols such as ethanol and isopropanol, the aromatic alcohols such as benzyl alcohol as well as similar products and mixtures thereof.

The solvents may be present in proportions preferably of between 1 and 40% by weight approximately relative to the total weight of the dyeing composition, and still more preferably between 5 and 30% by weight approximately.

Preferably the hair dye composition according to the present invention is incorporated into the composition for treating organic material, preferably for dyeing in amounts of 0.001 - 5% b.w. (hereinafter indicated merely by "%"), particularly 0.005 - 4%, more particularly 0.2 - 3%, based on the total weight of the composition.

The pH of the dyeing composition in accordance with the invention is generally between 2 and 1 1 approximately, and preferably between 5 and 10 approximately. It may be adjusted to the desired value by means of acidifying or alkalinizing agents normally used in dyeing keratinous fibres. The formulations may be applied on the keratin-containing fiber, preferably the human hair in different technical forms.

Technical forms of formulations are for example a solution, especially a thickened aqueous or aqueous alcoholic solution, a cream, foam, shampoo, powder, gel, or emulsion.

Customary the dyeing compositions are applied to the keratin-containing fiber in an amount of 50 to 10O g.

Preferred forms of formulations are ready-to-use compositions or multi-compartment dyeing devices or 'kits' or any of the multi-compartment packaging systems with compartments as described for example in US 6,190,421 , col 2, I. 16 to 31.

The pH value of the ready-to-use dyeing compositions is usually from 2 to 11 , preferably from 5 to 10.

One preferred embodiment of the present invention relates to the formulation of dyes, wherein the hair dye composition according to the present invention is in powder form.

Powder formulations are preferably used if stability and/or solubility problems as for example described in DE 197 13 698, p. 2, I. 26 to 54 and p. 3, 1. 51 to p. 4, 1. 25, and p. 4, 1. 41 to p. 5 I. 59.

Suitable cosmetic hair-care formulations are hair-treatment preparations, e.g. hair-washing preparations in the form of shampoos and conditioners, hair-care preparations, e.g. pre- treatment preparations or leave-on products such as sprays, creams, gels, lotions, mousses and oils, hair tonics, styling creams, styling gels, pomades, hair rinses, treatment packs, intensive hair treatments, hair-structuring preparations, e.g. hair-waving preparations for permanent waves (hot wave, mild wave, cold wave), hair-straightening preparations, liquid hair- setting preparations, hair foams, hairsprays, bleaching preparations, e.g. hydrogen peroxide solutions, lightening shampoos, bleaching creams, bleaching powders, bleaching pastes or oils, temporary, semi-permanent or permanent hair colorants, preparations containing self- oxidizing dyes, or natural hair colorants, such as henna or camomile. For use on human hair, the dyeing compositions of the present invention can usually be incorporated into an aqueous cosmetic carrier. Suitable aqueous cosmetic carriers include, for example W/O, O/W, 0/W/O, W/O/W or PIT emulsions and all kinds of microemulsions, creams, sprays, emulsions, gels, powders and also surfactant-containing foaming solutions, e.g. shampoos or other preparations, that are suitable for use on keratin-containing fibers. Such forms of use are described in detail in Research Disclosure 42448 (August 1999). If necessary, it is also possible to incorporate the dyeing compositions into anhydrous carriers, as described, for example, in US-3 369 970, especially col 1 , I. 70 to col 3, 1. 55. The dyeing compositions according to the invention are also excellently suitable for the dyeing method described in DE-A-3 829 870 using a dyeing comb or a dyeing brush.

The constituents of the aqueous carrier are present in the dyeing compositions of the present invention in the customary amounts, for example emulsifiers may be present in the dyeing compositions in concentrations θf from 0.5 to 30 % b.w. and thickeners in concentrations θf from 0.1 to 25 % b.w. of the total dyeing composition.

Further carriers for dyeing compositions are for example described in "Dermatology", edited by Ch. Culnan, H. Maibach, Verlag Marcel Dekker Inc., New York, Basle, 1986, Vol. 7, Ch. Zviak, The Science of Hair Care, chapter 7, p. 248-250, especially on p. 243, 1. 1 to p. 244, 1. 12.

The hair dye composition according to the present invention may be stored in a liquid to paste-like preparation (aqueous or non-aqueous) or in the form of a dry powder.

When the dyes and adjuvants are stored together in a liquid preparation, the preparation should be substantially anhydrous in order to reduce reaction of the compounds.

The dyeing compositions according to the invention may comprise any active ingredients, additives or adjuvants known for such preparations, like surfactants, solvents, bases, acids, perfumes, polymeric adjuvants, thickeners and light stabilizers.

The following adjuvants are preferably used in the hair dyeing compositions of the present invention: non-ionic polymers, cationic polymers, acrylamide/dimethyldiallylammonium chloride copolymers, quaternised polyvinyl alcohol, zwitterionic and amphoteric polymers, anionic polymers, thickeners, structuring agents, hair-conditioning compounds, protein hydrolysates, perfume oils, dimethyl isosorbitol and cyclodextrins, solubilizers, anti-dandruff active ingredients, substances for adjusting the pH value; panthenol, pantothenic acid, allantoin, pyrrolidonecarboxylic acids and salts thereof, plant extracts and vitamins; choleste- rol; light stabilizers and UV absorbers, consistency regulators, fats and waxes, fatty alkanol- amides, polyethylene glycols and polypropylene glycols, complexing agents, swelling and penetration substances, opacifiers, such as latex; pearlising agents, propellants, antioxidants; sugar-containing polymers, quaternary ammonium salts, or bacteria inhibiting agents.

The dyeing compositions according to the present invention generally comprise at least one surfactant. Suitable surfactants are zwitterionic or ampholytic, or more preferably anionic, non-ionic and/or cationic surfactants.

Suitable anionic surfactants are characterized by an anionic group that imparts water solu- bility, for example a carboxylate, sulfate, sulfonate or phosphate group, and a lipophilic alkyl group having approximately 10 to 22 carbon atoms. In addition, glycol or polyglycol ether groups, ester, ether and amide groups and also hydroxy groups may be present in the molecule.

Preferred anionic surfactants are alkyl sulfates, alkyl polyglycol ether sulfates and ether carboxylic acids having 10 to 18 carbon atoms in the alkyl group and up to 12 glycol ether groups in the molecule, and also especially salts of saturated and especially unsaturated C ₈ -C ₂₂ carboxylic acids, such as oleic acid, stearic acid, isostearic acid and palmitic acid.

Surface-active compounds that carry at least one quaternary ammonium group and at least one -COO ^" or -SO3 ^" group in the molecule are terminated zwitterionic surfactants. Preference is given the so-called betaines, such as the N-alkylN,N-dimethylammonium glycinates, for example cocoalkyldimethylammonium glycinate, N-acylaminopropyl-N,N-dimethylammonium glycinates, for example cocoacylaminopropyldimethylammonium glycinate, and 2-alkyl-3- carboxymethyl-3-hydroxyethylimidazol. having from 8 to 18 carbon atoms in the alkyl or acyl group and also cocoacylaminoethylhydroxyethylcarboxymethyl glycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known by the CTFA name cocamidopropyl betaine. Ampholytic surfactants are surface-active compounds that, in addition to a C ₈ -Ci ₈ -alkyl or -acyl group and contain at least one free amino group and at least one -COOH or -SO3H group in the molecule and are capable of forming internal salts. Examples of suitable ampholytic surfactants include N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines,

N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids and alkylaminoacetic acids, each having approximately from 8 to 18 carbon atoms in the alkyl group. Ampholytic surfactants to which special preference is given are N-cocoalkylaminopropionate, cocoacylaminoethylaminopropionate and Ci ₂ -Ci ₈ acylsarcosine.

Suitable non-ionic surfactants are described in WO 00/10519, especially p. 45, 1. 1 1 to p. 50, I. 12. Non-ionic surfactants contain as hydrophilic group, for example, a polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether groups.

Examples of cationic surfactants that can be used in the dyeing compositions according to the invention are especially quaternary ammonium compounds.

Alkylamidoamines, especially fatty acid amidoamines, such as the stearylamidopropyldi- methylamine obtainable under the name Tego Amid ^® 18 are also preferred as surfactants in the present dyeing compositions. They are distinguished not only by a good conditioning action but also especially by their good biodegradability.

A further preferred embodiment of the present invention relates to a method of treating keratin-containing fibers with the hair dye composition according to the present invention.

The method comprises treating the hair in the presence of a reduction agent.

Usually, the dyeing compositions are applied to the keratin-containing fiber in an amount of from 50 to 100 g.

The oxidizing agents described above can also be used as lightening composition for lightening of the hair before the intrinsic dyeing process. Therefore, the present invention also relates to a method for simultaneous dyeing and waving of keratinous fibers, comprising the steps of

(a) treating the hair with a lightening composition,

(b) optionally treating the hair with a reductive wave agent; and (c) treating the hair with a hair dyeing composition according to the present invention.

Moreover, this method is also suitable for the smoothing of hair.

The hair dye composition according to the present invention is suitable for all-over dyeing of the hair, that is to say when dyeing the hair on a first occasion, and also for re-dyeing subsequently, or dyeing of locks or parts of the hair, for example for the dyeing of eyebrows, eyelashes, body hair and or beards.

The hair dye composition according to the present invention is applied on the hair for example by massage with the hand, a comb, a brush, or a bottle, or a bottle, which is combined with a comb or a nozzle.

In the processes for dyeing according to the invention, whether or not dyeing is to be carried out in the presence of a further dye will depend upon the color shade to be obtained.

Further preferred is a process for dyeing keratin-containing fibers which comprises treating the keratin-containing fiber with the hair dye composition according to the present invention, a base and an oxidizing agent.

The oxidation dyeing process usually involves lightening, that is to say that it involves applying to the keratin-containing fibers, at basic pH, a mixture of bases and aqueous hydrogen peroxide solution, leaving the applied mixture to stand on the hair and then rinsing the hair. It allows, particularly in the case of hair dyeing, the melanin to be lightened and the hair to be dyed.

In general, the oxidizing agent containing composition is left on the fiber for 0 to 15 minutes, in particular for 0 to 5 minutes at 15 to 45°C, usually in amounts of 30 to 20Og. Oxidizing agents are for example persulfate or diluted hydrogen peroxide solutions, hydrogen peroxide emulsions or hydrogen peroxide gels, alkaline earth metal peroxides, organic peroxides, such as urea peroxides, melamine peroxides, or alkalimetalbromate fixations are also applicable if a shading powder on the basis of semi-permanent, direct hair dyes is used.

Most preferred oxidizing agent is hydrogen peroxide, preferably used in a concentration from about 2 to 30 %, more preferably about 3 to 20% by, and most preferably from 6 to 12% b.w. the corresponding composition.

The oxidizing agents may be present in the dyeing compositions according to the invention preferably in an amount from 0.01 % to 6 %, especially from 0.01 % to 1 %, based on the total dyeing composition.

In general, the dyeing with an oxidative agent is carried out in the presence of a base, for example ammonia, alkali metal carbonates, earth metal (potassium or lithium) carbonates, alkanol amines, such as mono-, di- or triethanolamine, alkali metal (sodium) hydroxides, earth metal hydroxides or compounds of the formula

, wherein

R is a propylene residue, which may be substituted with OH or d-C ₄ alkyl, R ₃ , R ₄ , R5 and R ₆ are independently or dependency from each other hydrogen, Ci-C ₄ alkyl or hydroxy-(Ci-C ₄ )alkyl.

The pH-value of the oxidizing agent containing composition is usually about 2 to 7, and in particular about 2 to 5.

One preferred method of applying formulations comprising the hair dye composition according to the present invention on the keratin-containing fiber, preferably the hair is by using a multi-compartment dyeing device or "kit" or any other multi-compartment packaging system, as described for example in WO 97/20545 on p. 4, 1. 19 to I. 27. The following Examples serve to illustrate the processes for dyeing without limiting the processes thereto. Unless specified otherwise, parts and percentages relate to weight. The amounts of dye specified are relative to the material being colored.

Application Examples:

1. Combination of Basic Blue 124 with Basic Red 76, Basic Yellow 57, Basic Brown 16, Basic Brown 17 and Basic Blue 99 for dyeing of hair 2. .Combination of Basic Blue 124 with Basic Red 76, Basic Yellow 57, Basic Brown 16, Basic Brown 17 and Basic Blue 99 and Basic Red 51 , Basic Yellow 87 and Basic Orange 31 for dyeing hair

For the application examples the following hair types have been used: - 1 blonde hair tress (VIRGIN White Hair),

1 middle blonde hair tress (UNA-Europ. nature hair, Color middle blonde), 1 bleached hair tress (UNA-Europ. nature hair, Color white bleached).

Coloring Solution: 0.1 % w/w of the dye is dissolved in a Plantaren solution (5 % w/w Plantacare 2000UP (ID: 185971.5) in water; pH adjusted to 9.5 with 50% citric acid solution or monoethanolamine solution).

The hair tresses were dyed according to the following procedure: The coloring solution was applied directly to the dry hair, incubated for 20 min. at room temperature, and then rinsed off under tap water (Water temperature: 37°C +/- 1 ⁰ C ; flow rate of water: 5-6 l/min.). Then it was pressed out with a paper towel and dried over night at room temperature on a glass plate.

To determine the wash fastness two sets of hair tresses were dyed under the same conditions. One set of the dyed tresses was washed with a commercial shampoo (GOLDWELL definition Color & Highlights, color-conditioner shampoo) using approx. 0.5 g shampoo for each tress under tap water (water temperature: 37°C +/- 1 ⁰ C; flow rate 5-6 l/min). Finally the tresses were rinsed under tap water, pressed out with a paper towel, combed and dried with a hair dryer or at room temperature. This procedure was repeated 10 times.

Then the color loss of the set of washed tresses relative to the set of unwashed tresses was evaluated using the Grey Scale according to: Industrial Organic Pigments by Herbst&Hunger, 2nd ed., p. 61 , Nr 10: DIN 54 001-8-1982, ,,Herstellung und Bewertung der Anderung der Faroe", ISO 105-A02-1993.

Example 1 :

0.1 % of Basic Blue 124 is dissolved in a 5 % solution of a non-ionic surfactant (Plantacare 2000 UP, Henkel) adjusted to pH 9.5 using citric acid or monoethanolamine. This blue dyeing solution is applied on the dry hair (two blond, two middle blond and two damaged hair strands) and allowed to stand for 20min at room temperature. Then, the strands are rinsed under tap water and dried 12h.

Example 2:

A dye emulsion, pH = 10.5

is mixed with 1.5 weight of 9% hydrogen peroxide solution and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed blue.

Example 3:

A dye emulsion, containing 1 % of the dye pH= 9.8

is mixed with the same weight of 6 % hydrogen peroxide solution and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed violet.

Example 4:

A dye emulsion with pH=6.4, containing

0.05 % of the dye Basic Blue 124

0.15 % Basic Blue 99

0.07 % Basic Brown 17 0.04 % Basic Yellow 57

0.15 % Basic Brown 16

0.01 % Basic Red 76

0.01 % Basic Red 51 0.01 % HC Red BN

0.01 % HC Red 3

0.01 % 3-Nitro-p-Hydroxyethylaminophenol

0.05 % HC Blue 2

3.5 % Cetearyl alcohol

1.0 % Ceteareth 30

0.5 % Glycol Distearate

3.0 % Stearamide DEA

1.0 % Sodium Oleoamphohydroxypropyl Sulfonate

0.5 % Polyquarternium-6

0.1 % Tinovis CD (Dimethylacrylamide/Ethyltrimonium Chloride Methacrylate Copolymer,

Propylene Glycol Dicaprylate/Dicaprate, PPG-1 Trideceth-6, C10-1 1 Isoparaffin) water ad 100%

is applied for 30 minutes, at room temperature to bleached human hair, and rinsed. The result is a redish brown dyeing with good fastnesses.

Example 5:

A dye emulsion containing

is applied for 30 minutes, at room temperature, to colored middle blond human hair, and rinsed. The result is a redish blue dyeing with good fastnesses. Example 6:

60 ml of part A, 60ml of part B and 3 ml of part C are mixed in a mixing bowl or applicator bottle and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed an intensive violet.

Example 7:

60 ml of part A, 60ml of part B and 3 ml of part C are mixed in a mixing bowl or applicator bottle and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed an intensive black.

Example 8:

A dye emulsion, containing 1 % of Basic Blue 124 pH= 10.5

is mixed with 1.5 weight of 9% hydrogen peroxide solution and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed an intensive blue.

Example 9:

A dye emulsion, containing

0.1 % Basic Blue 124 and

is applied for 30min, at room temperature, to blond human hair, and rinsed. The result is a very attractive vibrant violet dyeing with good fastnesses.

Example 10:

A tress of gray hair is shampooed with a shampoo, containing

0.01 % of Basic Blue 124 and

After 5 minutes the tress is rinsed and dried. The tress has been more brilliant less yellowish.

Example 11 :

A tress of gray hair is shampooed with a shampoo, containing

The tress has been more brilliant violet. Example 12:

A tress of gray hair is shampooed with a shampoo, containing

The tress has been dyed middle brown with a medium gray coverage.

Example 13:

A conditioner containing

is applied to a tress of shampooed middle blond and gray hair. After 15min the tress is rinsed and dried.

The tress has been dyed brown with good gray coverage.

Example 14:

A conditioner containing

is applied to a tress of shampooed blond hair. After 5min the tress is rinsed and dried. The tress has been dyed blue.

Example 15:

A conditioner containing

is applied to a tress of shampooed blond hair. After 5min the tress is rinsed and dried. The tress has been dyed violet.

Example 16:

A conditioner containing

is applied to a tress of shampooed gray hair. After 5min the tress is rinsed and dried. The tress has been dyed dark brown.

Example 17:

A dye emulsion, containing

0.05 % of the dye Basic Blue 124

0.15 % Basic Blue 99

0.07 % Basic Brown 17 0.04 % Basic Yellow 57

0.15 % Basic Brown 16

0.01 % Basic Red 51

0.01 % Basic Orange

0.01 % Basic Red 76 0.01 % Basic Yellow 87

3.5 % Cetearyl alcohol

1.0 % Ceteareth 80

0.5 % Glycol Distearate

3.0 % Stearamide DEA 1.0 % Sodium Oleoamphohydroxypropyl Sulfonate

0.5 % Polyquarternium-6

0.2 % Disodium distyrylbiphenyl disulfonate and water ad 100%

is applied for 30 minutes, at room temperature to bleached human hair, and rinsed. The result is a brown dyeing with good fastnesses. Example 18:

A conditioner containing

is applied to a tress of shampooed middle blonde hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly brown.

Example 19:

A conditioner containing

is applied to a tress of shampooed blonde hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly violet. Example 20:

A conditioner containing

is applied to a tress of shampooed middle blonde hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly brown.

Example 21 :

A conditioner containing

is applied to a tress of shampooed middle blonde hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly dark brown. Example 22:

A conditioner containing

is applied to a tress of shampooed middle blonde hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly brown.

Example 23:

A conditioner containing

is applied to a tress of shampooed bleached hair. After 5min the tress is rinsed and dried. The tress has been dyed evenly green. Example 24:

A foaming tint containing

is applied to a tress of shampooed bleached hair. After 15min the tress is rinsed and dried. The tress has been dyed brown.

Example 25:

A setting lotion containing

is applied to a tress of shampooed gray hair. The tress has been more brilliant. Example 26:

A hair tonic containing

is applied to a tress of shampooed gray hair and dried. The tress has been more brilliant and less yellowish.

Example 27: A tint containing

is applied to a tress of shampooed middle blonde hair. After 5 min the tress is rinsed and dried. The tress has been dyed evenly brown. Example 28: A tint containing

is applied to a tress of shampooed middle blonde hair. After 5 min the tress is rinsed and dried. The tress has been dyed evenly brown.

Example 29: A tint containing

Example 30:

A dye emulsion with pH=6.4, containing

0.05 % of the dye Basic Blue 124 0.15 % Basic Blue 99

0.07 % Basic Brown 17

0.04 % Basic Yellow 57

0.15 % Basic Brown 16

0.01 % Basic Red 76 0.01 % Basic Red 51

0.01 % HC Red BN

0.01 % HC Red 3

0.01 % 3-Nitro-p-Hydroxyethylaminophenol

0.05 % HC Blue 2 0.05 % Basic Blue 26

0.05 % Basic Blue 75

3.5 % Cetearyl alcohol

1.0 % Ceteareth 30

0.5 % Glycol Distearate 3.0 % Stearamide DEA

1.0 % Sodium Oleoamphohydroxypropyl Sulfonate

0.5 % Polyquarternium-6

0.1 % Tinovis CD (Dimethylacrylamide/Ethyltrimonium Chloride Methacrylate Copolymer,

Propylene Glycol Dicaprylate/Dicaprate, PPG-1 Trideceth-6, C10-1 1 Isoparaffin) water ad 100%

is applied for 30 minutes, at room temperature to bleached human hair, and rinsed. The result is a redish brown dyeing with good fastnesses. Example 31 :

60 ml of part A, 60ml of part B and 3 ml of part C are mixed in a mixing bowl or applicator bottle and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed an intensive violet.

Example 32:

A dye emulsion, containing 0.4 % of Basic Blue 124, 0.3% Basic Blue 76 and 0.3% Basic

Blue 75 pH= 10.5

is mixed with 1.5 weight of 9% hydrogen peroxide solution and the mixture is immediately applied to a tress of brown hair. After 30 minutes the tress is rinsed, shampooed, rinsed and dried. The tress has been dyed an intensive blue.